When you see screaming headlines like these on the Web, your first impulse might be to click on the deal and shop for a ticket right away. But if you spend a few minutes hunting for these low fares, you're likely to give up in frustration. Sound familiar? Typically, either you won't be able to find seats anywhere near the advertised prices, or the dates and times you want will be sold out.

When you see screaming headlines like these on the Web, your first impulse might be to click on the deal and shop for a ticket right away. But if you spend a few minutes hunting for these low fares, you're likely to give up in frustration. Sound familiar? Typically, either you won't be able to find seats anywhere near the advertised prices, or the dates and times you want will be sold out.